package cn.fuck;

public class Animal {
    void desc() {
        System.out.println("a protected method");
    }
    protected static void gg() {
        System.out.println("gg");
    }
    private int id;
    private int age;

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }
    public void run() {
        System.out.println("running...");
    }
    public static void main(String[] args) {
        Object a = null;
        if (a instanceof Animal)
            System.out.println("yes");
        else
        System.out.println("no");
    }
}
